Pneumatic straw-elevator



(No'ModeL) I 2 Sheets-Sheet .1.

E F- T. LAN-DIS;

PNEUMATIC STRAW ELEVATOR.

No. 514,266. Patented Feb. 6, 1 894.

INVENTOR (No Model.) v 2 Sheets-Sheet 2. F. F. LANDIS. PNEUMATIC STBAWELEVATOR.

Patented Feb. 6, 1894.

' v ATTORNEY.

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FRANK F. LANDIS, OF WAYNESBOROUGH, PENNSYLVANIA.

PN EU MATIC STRAW-ELEVATO R.

vSIPECIFIQATION formingpart of Letters Patent No. 514,266, datedFebruary 6, 1894.

Application filed August 7, 1893.

To aZZ whom it may concern:

Beit known that I, FRANK F. LANDIS, a citizen of the United States,residing at Waynesborough, in the county of Franklin and State ofPennsylvania, have invented certain new and useful Improvements inPneumatic Straw- Elevators; andI do hereby declare the following to beafull, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same.

This invention relates to pneumatic straw elevators and stackers' usedin connection with thrashing machines; and it consists in the novelconstruction and combination of the parts hereinafter fully describedand claimed.

In the drawings: Figure 1 is a side view of the straw stacker partly insection; and Fig. 2 is a plan view of the same. Fig. 3 is a detail sideview of the flexible junction pipe drawn to a larger scale and showing-aportion of the revoluble discharge pipe in section. Fig. 4 is alongitudinal section through the end of the discharge pipe drawn to alarger scale.

A is a portion of the casing of a grain separator, and B is the deliverypipe through which the straw is driven by a blast of air in any approvedmanner. The pipe B is rigidly secured to the separator casing.

O is the revoluble discharge pipe which is i made of a length sufficientto stack the straw to the required height.

D is a flexible junction pipe which connects the pipes B and G andpermits the pipe 0 to be moved in every direction both vertically andcircumferentially. Any kind of a flexible junction pipe which will givethe requisite range of movement may be used, but preference is given toa sheet metal pipe formed of articulated segments and inclosed in aflexible and substantially air-tight casing or tube.

.leather.

The pipe D consists of a series of overlapping conical segments d, andan end piece 01'. The bottom segment is secured to the pipe B. Thesegments (1 are all alike and are operatively connected together and tothe plain circular end piece (1" by means of three or more straps b offlexible material, such as Four straps arranged equi-distant from eachother are preferred. Each strap SerialNo-48Z,556. (NomodeL) issecured'to all the segments by bolts or rivets e at points where thesegments never overlap, and the straps are made of a length sufficientto permit the segments to bend over to the greatest requisite curvature.The segments fit into each other loosely, and in order to prevent strawfrom being driven between their joints by the pressure of the blast, thesegments are inclosed in a tube D of flexible material. The tube D issecured to the end of the pipe B and to the end piece ct in any approvedmanner, and is preferably made of canvas or some other similar materialwhich is practically air-tight.

' E is a collar journaled on the pipe 0 and provided with rearwardlyprojecting arms 6'.

F are rollers journaled on the pins f carried by the brackets f whichare secured to the pipe 0. These rollers bear against one end of thecollarE, but the thrust of the pipe 0, when raised, may be taken in anyother approved manner besides using the rollers F.

G is a standard secured to the top of the separator casing and providedwith bearings g arranged vertically over the center of the pipe B.

H is a shaft journaled in the bearings g,

and provided with a yoke h at its lower end.

The ends of the yoke are pivoted to the ends of the arms e by the pins72/. The shaft and yoke prevent the segments d from telescoping intoeach other. They also permit the pipe 0 to be revolved in a horizontalplane for the greater part of a circle, and they also permit it to beraised to the position indicated by the dotted lines in Fig. l.

A collar I is secured on the end piece d which is inserted into the pipe0, and '5 are: rollers journaled on pins projecting from the brackets11' which are secured to the pipe 0. The brackets 'i' extend over thecollar, I, and the rollers bear against the said collar and holdthe'segments 01 extended, at the same time permitting the end piece (1and the pipe 0 to revolve freely and independent of each other.

The pipe 0 is made in two portions connected together by the hinge J.When the elevator is in operation the two portions ot.

moved and the front portion of the pipe 0 is turned back, as indicatedby the dotted lines 1n Fig. 2, for convenience.

K is a collar or ring which is secured to the plpe at about the middleof its length.

K Isa collar, which is slipped over the collar K, and is provided withhooked bolts to prevent its return.

L is a spacing ring arranged diagonally in the chamber formed by the twocollars K and K, and m are balls which are dropped into holes in thering L and form a ball bearing between the two said collars.

M are lugs on the collar K for the attachment of the lifting cord.

N is the lifting cord preferably provided with two ends it which areconnected to the lugs M.

O is a sheave which is suspended over the center of the pipe B and isfree to turn in every direction.

0' is a support for the sheave O, and preferably consists of a tubesecured at its lower end to the standard G. The support 0' is providedwith a cap at the top to which the sheave block or bracket is connectedby the links 0; and 0 are stay rods for the tube 0, whlch are secured attheir lower ends to any convenient part of the separator casing. is abarrel secured on the shaft P which 15 ournaled in the standard G. Aworm wheel 1) is secured on the shaft P, and is driven by the worm p,which is secured on the shaft q, also journaled in the said standard andprovided with the hand wheel q for revolving it.

The end of the lifting cord N is wound on the barrel P, and the pipe 0is raised and lowered by turning the hand wheel q. Any other approvedhoisting mechanism may be used for winding up the lifting cord ifdesired.

The discharge pipe 0 is preferably provided with a rectangular endportion R. which is open at the end and bottom. The sides of the endportion R have curved guides R secured to them, and these guides havestraight upper portions arranged parallel with the discharge pipe.

S is a flexible jointed plate which slides in the guides R. The platepreferably consists of several plates of thin sheet iron looselyconnected together by rivets s. The loosely fitting rivets permit theplate S to bend freely and the separate plates are also bent slightlywhen made of thin sheet metal.

hen the plate S is in the straight parts of the guides, the straw isdriven out of the end of the pipe in a straight line by the blast; butwhen the plate S is pushed forward into the curved parts of the guides,the straw is deflected and is discharged downward onto the stack.

Any approved operating device maybe used for sliding the plate S backand forth in its guides.

T is an endless cord, or its equivalent such as a chain, wire ropeorband. The cord T is secured to the plate S. One end of the cord orchain passes around the guide sheave f at the end of the pipe, and theother end passes around the driving sheave f which is mounted on a shaftjournaled in brackets secured to the pipe 0, and provided with'a handleT, and arranged so that it may be operated by a man standing on theseparator casing. The cord T and its driving devices may be dupli catedif desired. The handle T is also used to revolve the pipe 0 to the rightor to the left. When the pipe C is swung around horizontally the endpiece cl of the pipe D revolves inside the pipe (3, and the pipe 0 1snot revolved, the revolution of the pipe 0 being independent of thejunction pipe and controlled by hand.

I do not confine myself to the specific construction of the variousparts of the device when used in combination, as the construction of theflexible pipe D, for instance, may be changed without changing itsaction in combination with the revoluble pipe 0.

I do not claim the specific form of deflector shown at the end of thedischarge pipe, as 1 am aware that the same has been used by others.

What I claim is- 1. In a pneumatic straw elevator, the combination, witha stationary delivery pipe, a swinging discharge pipe, and a flexiblejunction pipe connecting the aforesaid pipes; of a jointed supportoperatively connected with the said discharge pipe, and a stationarystandard pivotally connected with the said support, whereby the saidjunction pipe is prevented from telescoping, substantially as set forth.

2. In a pneumatic straw elevator, the combination, with a stationarydelivery pipe, a swinging discharge pipe revoluble on its own axis, anda flexible junction pipe connecting the aforesaid pipes; of anadjustable deflector at the free end of the discharge pipe, and asupporting device-such as a cord-connect ed with the said dischargepipe, whereby the said discharge pipe is free to be moved bothvertically and horizontally and may be caused to discharge the straw tothe right or left and at different angles, substantially as set forth.

3. The combination, with the stationary delivery pipe, and a standardprovided with a bearing arranged in line with the said pipe; of aflexible junction pipe secured at one end to the delivery pipe, adischarge pipe revolublyconnected with the other end of the junctionpipe, a collar journaled on the discharge pipe and provided withrearwardly extending arms, and a vertical shaft journaled in the saidbearing and provided with a yoke having its ends pivoted to the ends ofthe said arms, substantially as and for the purpose set forth.

4. The combination, with the stationary delivery pipe, and a stationarysupport provided IIO with a bearing and a sheave both arrangedsubstantially over the center of the delivery pipe; of a flexiblejunction pipe secured at one end to the delivery pipe,a discharge piperevolubly connected with the other end of the junction pipe, a collarjournaled on the discharge pipe and provided with rearwardly extendingarms, a vertical shaft journaled in the said bearing and provided with ayoke having its ends pivoted to the ends of the said arms, a liftingcord passing over the said sheave and connected with the discharge pipe,and winding mechanism connected to the said cord,whereby the dischargepipe may be raised and lowered and swung around, substantially as setforth.

5. The combination, with the stationary delivery pipe, and the flexiblejunction pipe secured at one end to the delivery pipe and provided witha collar on its other end; of the discharge pipe journaled on the freeend of the junction pipe; and the brackets secured to the dischargepipe, extending over the said livery pipe of a straw elevator; of aflexible junction pipe consisting of a series of overlapping conicalsegments d, a lower end piece rigidly secured to the said delivery pipe,and an upper end piece d, a series of flexible straps secured to thesegments and to the end plece,

and a tube of flexible material inclosing all of,

FRANK F. LANDIS.

Witnesses:

HERBERT W. T. J ENNER, ALF. N. RUssELL.

